Abstract
A class IV flextensional transducer is a typical underwater acoustic transducer capable of generating high power sound waves. The small extensional displacement of a piezoceramic stack in the major axis of the transducer causes a large displacement along the minor axis by the leverage effect of a compliant shell, and this provides the large volume displacement for high power acoustic waves. High power and long term usage of the transducer causes accumulation of a lot of heat inside the structure, which results in the transducer performance to deteriorate. In this study, the effects of the structural variables of the transducer were investigated using the finite element method, and their influences were prioritized to design a transducer to have the highest sound pressure with the lowest heat generation at a desired operation frequency. The transducer designed showed an 11.2% increase in its sound pressure and a 16.5% decrease in its heat generation in comparison with a basic model of a conventional structure.
| Original language | English |
|---|---|
| Pages (from-to) | 3997-4002 |
| Number of pages | 6 |
| Journal | Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers |
| Volume | 47 |
| Issue number | 5 PART 2 |
| DOIs | |
| State | Published - 23 May 2008 |
Keywords
- Class IV flextensional transducer
- Finite element analysis
- Harmonic analysis
- Piezoelectric ceramics
- Thermal analysis